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Prototype of Water Rise Detection Tool in Kampar River Fish Cages Based on Internet of Things (IoT) Setiawan, Muhammad Bayu; Azriadi, Emon; Musridho, Joko
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

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Abstract

Fish cages, classified as vessels under the Indonesian Shipping Law Number 17 of 2008, must consider safety aspects due to risks such as sinking and drifting. Increasing river discharge causes damage to the cage structures, potentially worsening fish health and causing economic losses for fish farmers. This study aims to develop a water level detection device for fish cages in the Kampar River using Internet of Things (IoT) technology based on waterproof ultrasonic sensors and the ESP32 microcontroller. The device can automatically monitor water levels and provide real-time alerts to cage owners via wireless Wi-Fi or Bluetooth connections. The research uses a Research and Development (R&D) approach. This innovation is expected to help fish cage owners anticipate risks from changes in water levels and improve the management of fish farming operations
Smart Adaptive Traffic Light Prototype Using Ultrasonic Sensors and Arduino Hamdi, Firman; Musridho, Joko; Adeswastoto, Hanantatur
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

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Abstract

Traffic congestion at intersections is often caused by traffic light systems that still rely on fixed timing without taking into account the number of vehicles. The purpose of this study is to create a prototype of a smart traffic light that can adapt automatically using ultrasonic sensors and Arduino. The method applied is Research and Development (RnD) with a prototype approach through the stages of design, assembly, and using a scaled prototype simulation. The results of the testing show that this system is capable of regulating the duration of the green light based on vehicle density, thereby improving the smooth flow of traffic at intersections.
Design and Construction of a Web-Based Sales Information System (Case study of a simple coffee shop business) Ariati, Mila; Rusnedy, Hidayati; Musridho, Joko
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 1 (2026): Maret 2026
Publisher : Journal of Engineering Science and Technology Management

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Abstract

Sales transactions at Kedai Kopi Sederhana are still carried out manually through handwritten order records, cash payments, and daily sales reports without digital support. This manual process leads to several issues, including recording errors, inaccurate orders, data loss risks, and delays in generating sales reports. This study aims to design and develop a web-based sales information system to improve operational efficiency and data accuracy. The FAST (Framework for the Application of Systems Thinking) method was used, consisting of scope definition, problem analysis, requirements analysis, logical and physical design, system construction, and testing. The system was developed using PHP with the Laravel framework and MySQL database. The results show that the system successfully automates ordering, payment validation, menu management, and real-time sales reporting. Black Box testing indicates that all features function properly according to user requirements. Therefore, the system enhances business efficiency, reduces recording errors, and enables the business owner to monitor sales performance more effectively.